From 57c2a5fa5a8b57a094e6e89aafa1702b76218da7 Mon Sep 17 00:00:00 2001
From: Christian Gmeiner <christian.gmeiner@gmail.com>
Date: Wed, 29 Aug 2007 11:55:23 +0000
Subject: [PATCH] add support to switch device driver at runtime

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14508 a1c6a512-1295-4272-9138-f99709370657
---
 apps/menus/settings_menu.c                     | 11 +++++++----
 firmware/usbstack/drivers/device/usb_serial.c  |  7 ++++++-
 firmware/usbstack/drivers/device/usb_serial.h  |  1 +
 firmware/usbstack/drivers/device/usb_storage.c |  7 ++++++-
 firmware/usbstack/drivers/device/usb_storage.h |  1 +
 5 files changed, 21 insertions(+), 6 deletions(-)

diff --git a/apps/menus/settings_menu.c b/apps/menus/settings_menu.c
index 5c97ac21db..a85024e3d2 100644
--- a/apps/menus/settings_menu.c
+++ b/apps/menus/settings_menu.c
@@ -479,7 +479,7 @@ int usbdriver_menuitem(void)
                    global_settings.usb_stack_device_driver))
             break;
     }
-    
+
     gui_synclist_init(&lists, usb_menu_getname, drivers, false, 1);
     gui_synclist_set_title(&lists, str(LANG_USBSTACK_DEVICE_DRIVER), NOICON);
     gui_synclist_set_icon_callback(&lists, NULL);
@@ -495,14 +495,17 @@ int usbdriver_menuitem(void)
             continue;
         if (action == ACTION_STD_CANCEL)
         {
-            // setting was canceled
+            /* setting was canceled */
             break;
         }
         else if (action == ACTION_STD_OK)
         {
-            // setting was accepted... save
-            strcpy(global_settings.usb_stack_device_driver, 
+            /* setting was accepted... save */
+            strcpy(global_settings.usb_stack_device_driver,
                   drivers[gui_synclist_get_sel_pos(&lists)]);
+
+            /* switch device driver */
+            usb_device_driver_bind(drivers[gui_synclist_get_sel_pos(&lists)]);
             break;
         }
         else if (action == ACTION_REDRAW)
diff --git a/firmware/usbstack/drivers/device/usb_serial.c b/firmware/usbstack/drivers/device/usb_serial.c
index 578e9a1e2d..c243821a4b 100644
--- a/firmware/usbstack/drivers/device/usb_serial.c
+++ b/firmware/usbstack/drivers/device/usb_serial.c
@@ -25,7 +25,7 @@ static struct usb_dcd_controller_ops* ops;
 struct usb_device_driver usb_serial_driver = {
     .name =         "serial",
     .bind =         usb_serial_driver_bind,
-    .unbind =       NULL,
+    .unbind =       usb_serial_driver_unbind,
     .request =      usb_serial_driver_request,
     .suspend =      NULL,
     .resume =       NULL,
@@ -212,6 +212,11 @@ autoconf_fail:
     return -EOPNOTSUPP;
 }
 
+void usb_serial_driver_unbind(void) {
+
+    /* disable endpoints... */
+}
+
 int usb_serial_driver_request(struct usb_ctrlrequest* request)
 {
     int ret = -EOPNOTSUPP;
diff --git a/firmware/usbstack/drivers/device/usb_serial.h b/firmware/usbstack/drivers/device/usb_serial.h
index 8b9d96814e..cc5d9c488f 100644
--- a/firmware/usbstack/drivers/device/usb_serial.h
+++ b/firmware/usbstack/drivers/device/usb_serial.h
@@ -26,6 +26,7 @@
 void usb_serial_driver_init(void);
 
 int usb_serial_driver_bind(void* controller_ops);
+void usb_serial_driver_unbind(void);
 int usb_serial_driver_request(struct usb_ctrlrequest* req);
 void usb_serial_driver_speed(enum usb_device_speed speed);
 
diff --git a/firmware/usbstack/drivers/device/usb_storage.c b/firmware/usbstack/drivers/device/usb_storage.c
index 88129cdc96..9133c85293 100644
--- a/firmware/usbstack/drivers/device/usb_storage.c
+++ b/firmware/usbstack/drivers/device/usb_storage.c
@@ -27,7 +27,7 @@ static struct usb_dcd_controller_ops* ops;
 struct usb_device_driver usb_storage_driver = {
     .name =         "storage",
     .bind =         usb_storage_driver_bind,
-    .unbind =       NULL,
+    .unbind =       usb_storage_driver_unbind,
     .request =      usb_storage_driver_request,
     .suspend =      NULL,
     .resume =       NULL,
@@ -194,6 +194,11 @@ autoconf_fail:
     return -EOPNOTSUPP;
 }
 
+void usb_storage_driver_unbind(void) {
+
+    /* disable endpoints... */
+}
+
 int usb_storage_driver_request(struct usb_ctrlrequest* request)
 {
     int ret = -EOPNOTSUPP;
diff --git a/firmware/usbstack/drivers/device/usb_storage.h b/firmware/usbstack/drivers/device/usb_storage.h
index efd20fe8ee..de53a06097 100644
--- a/firmware/usbstack/drivers/device/usb_storage.h
+++ b/firmware/usbstack/drivers/device/usb_storage.h
@@ -26,6 +26,7 @@
 void usb_storage_driver_init(void);
 
 int usb_storage_driver_bind(void* controller_ops);
+void usb_storage_driver_unbind(void);
 int usb_storage_driver_request(struct usb_ctrlrequest* req);
 void usb_storage_driver_speed(enum usb_device_speed speed);